Only one system selection on boot startup

In my system i have 2 windows installed one on C and one on disk J.
In my msconfig i see both but on stratup i see only one windows and not 2, so i need every time to select one of this as default and in this way on startup i can select the windows that i want.
There is the possibility to show on boot the 2 windows installation ?

Thank
Hispa

Try running the following command in a Command Prompt with Administrator privileges ("Run as Administrator"):

Code:

bcdboot J:\Windows /d /addlast